Folding chair seat fastener



Jan. 3, 1956 w. G. AXTELL ETAL FOLDING CHAIR SEAT FASTENER Filed March2, 1953 2 Sheets-Sheet 1 s Ham K m m a Nnu m4 5 ma n 000 H RMMW RM m W D1956 w. G. AXTELL ETAL FOLDING CHAIR SEAT FASTENER 2 Sheets-Sheet 2Filed March 2, 1953 m M S m5 ma H Mrs M W 4 M. 2 T 5 www 4 2% M A. 4

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United States PatentO 2,129,279 r 'FOLDINGCHAIR SEAT FASTENER with! G.Am", Denver, Colo., and Darold r. Beggs and Diamond A. Amorose, LincolnPark, Mich., as- "lignors'to Shvvayder Brothers, Denver, Colo., acorporation'of Colorado i e r v Application March 2,1953, SerialNo.339,75s I 2 Claims. (Cl. 155-196) This invention relates to tables,and more particularly to atable top mounting. Itis the object of thepresent invention to provide-a novel means of securing a. platform upona tubular frame. 1 It is the further object of this inventionto utilizethis novel means in a table construction.

Itisthe further object of this invention novel means ina chairconstruction,

It is the still further object of this invention to provide a simplifiedyet effective device for securing a table top upona tubular frame insuch fashion that it maybe removed, if desired, for replacement orrepair. a I These and other objects will be seen from the followingspecification and claims in conjunction with the appended drawings. inwhich: 1.

to provide this Fig. .1 is a fragmentary side elevational view of-a cardtable with. the legs broken away. Fig. 2 is a section taken on line 22of Fig. l. 'Fig. 3. is a section taken on line 3-3 of Fig. 2.

Fig. 4 is a plan view illustrating the table top fastener as pivotallymounted upon the table top, which is,fra gmentarily shown.

Fig. 5 is a side elevational view thereof.

Fig. 6 is a right end elevational view thereof.

Fig. 7 illustrates the present fastening device in conjunction with atubular frame of slightly different con struction.

Fig. 8 is an elevational view illustrating aslightlydifferent type offasteningdevice for the table top.

Fig. 9,.is a leftside elevational view thereof.

Fig. 10 is a fragmentary elevational section similar to Fig. 8illustrating a slightly different form of fastener.

Fig. 11 is a side elevational view of a chair utilizing the presentfastening device for the chair platform upon the tubular seat frame.

Fig. 12 is a section taken on.line'12-12 of Fig. 11.

Fig. 13 is a fragmentary elevational section illustrating the securingof the seat platform to the seat frame; and

Fig. 14 is a section taken on line 14- 14 of Fig. 13.

It will be understood that the above drawings illustrate merely severalpreferred embodiments of the invention and that other embodiments arecontemplated within the scope of the claims hereafter set forth.

Referring to the drawings, a table is'generallyindicated at 11 having ahollow rectangular tubular frame 12, which is ofsubstantially ellipticalshape in cross-section, the corners of said rectangular frame beingroundedat l3.

Said tubular frame includes an inner substantiallyupright wall 14, anouter convex wall 15 and top and bot? tom arcuate edges 16 and 17constructed of a radii less than the radius of outer wall 15.

The rectangularly shaped top 18 is positioned upon the top arcuate edge16 of tubular frame 12 and isjsecured thereto by the pivotal clips 25 inthe manner hereafter described. J

Arranged in each of the corners 13 of frame 12 and suitably securedthereto, as by welding, are leg mounting brackets 19 with inwardlydirected vU-shaped extensions 20 within which the respective. legs 21are pivotally mounted at their upper ends. The slotted stay 22 ispivotally connected at oneeud to the frame and receives within its slotthe headed pin 23 which projects from leg 7 spaced longitudinallyextending slots 24 adapted to have swung thereinto the offsetprojections 28 of the table top locking clips 25, which are positionedupon the undersurface of said table top and pivotally joined thereto asbythe rivets 26, Fig.3.

*Clip 25 .towards its outer end has an upright wall 27 which terminatesin the offset clip end 28 as'shown in Fig. 3. It will be noted that theside edge 29 of clip 25 is shorter than the side edge '30, so that theclip wall 27 at the upper end thereof, as in Fig. 4, is closer to pivot26 than the other end of said upright wall 27. It therefore follows thatthe upright. wall 27 lies. in a plane at an acute angle to thelongitudinal axis of clip -25, as indicated at 31, Fig. 4, to therebyfacilitate the rotation'of clip 25 and the introduction of the clip end28 within the slot 2.4,

By this. construction, when the clip 25 is at right anglestothe adjacentwall portion of the frame 12, the outer surface of upright element 27 asatpoint 33 operatively engages the outer upright wall portion 14 of saidframe adjacent slot 24.

As' shown inFigs. s and 6, the offset clip end 28 is It -will be notedthat the 'clips 25 are initially secured.

to.-the undersurface of table 18 and swivelled thereon by the rivets 26and are in engagement with the under surface of top 18.

Referring to Fig. 7, there is shown a slightly different cross-sectionalshape of tubular table frame which includes the convex outer surface 34,rounded top surface.

35, inwardly directed shoulder portion 36, upright inner wall portion 37and rounded bottom edge 38. The table top 39 has swivelled thereunder aplurality of clips 40 joined thereto by the rivets 41, which clips aresubstantially the same as the clips ,25 above described withrespect toFigs. 4, 5 and 6. Said clips include the downwardly extending uprightwall 42, which terminates in the outwardly projecting clip end 43 whichoperatively engages under the shoulder 36 of the frame shown in Fig. 7;The upright wall 42 upon .its outer surface operatively engages theinternal portion of frame element- 35, and at the same time the clip end43 wedgingly engages shoulder 36 when said clip is rotated so as to beat right angles to the adjacent wall 37 of said tubular frame.

This construction is similar to the frame construction above describedexcept that the slots 24 are omitted and substituted therefore is theshoulder formation 36.

Figs. 8 and 9 also show a slight variation in a clip construction forsecuring table top 50 to the tubular frame shown in Fig. 8. Said frameincludes the convex outer surface 44, top and bottom arcuate edges 45and 46 and the inner upright wall '47 which has a plurality of longi'tudinally spaced slots 48 formed therein. v

The securingclip 49 is positioned upon the under surface of top'50 andpivotally joined thereto by rivet 50'. Clip 49 has rightangulardepending portion 51 with an inturned lip 52 at its free end tofacilitate the downward positioning of the respective clip elements 51into the hollow rectangular formed frame. Within the depending clipelement 51 there is provided a struck out Patented Jan. 3, 1956 portion53 cut out from" element 51 on three sides and bent outwardly asat 53 inFig. 8 and. adapted for cooperative retaining positioning within therespective transverse slot 48 formed in the inner wall 47 of said frame.

Once the locking: elements 53' are within the said slots, the top 50 maynot be removed from said frame without manually bending clips element 51inwardly s'ufiicien-tly as to disengage locking element 53 fromthe-top'bounding Wall, which defines transverse slot 48.

Fig. 10 illustrates still another variations-of the clip shown in Fig.8. The clip 55 is swivelly 'mountedupon the undersurface of top 54 bythe rivet 56. Said clip has a' downwardly depending portion 57 and a'formed struck out element with an outtur-ned end portion 61, whichextendsthrough the transverse' slot 59-formed--;in clip element 57 bythe striking' outof the'lock' element 60'61. Here also said clip elementhas an inturned lip 58 similar to lip 52 of- Fig, 8 to facilitateinsertion of clip' element 57 within the frame. The locking end 61projects beyond the upright'wall of clip element-'57 and While Figs.1-10 illustrate the application of ate-tnvention to acard tableconstruction or other table,- Figs. 11- 14 illustrate an embodiment ofthe invention incorporated into a folding chair.

Such a chair includes the inverted U-shapedtubular frame 63 terminatingin the spaced front legs'64 and 65, there being a formed back rest 66secured within the upper portion of said frame.

A; substantially rectangular seat, generally indicated at 67, 18positioned between the legs 64 and 65 and pivotallyjoined thereto by thetransverse rivets 72. The seat 67 includes the lJ-shaped tubular frame68, the free ends of which have caps 69. The free ends areinterconnected by the cross bar or strip 70 whose ends are projectedinto corresponding transverse apertures 71 adjacent the caps 69. Rivets-72 extend through legs 64 and 65 and through corresponding adjacentportions of the tubular frame68' u'pon opposite sides of said seat andintermediate itsfront and rear edges.

There are also provided a pair of upright rear legs 73 and 74 arrangedat an acute angle respectively to front legs 64 and 65, in advance ofsaid legs or lying in substantially the same plane. Said legs adjacenttheir upper ends and upon their interior surfaces having secured'theretothe mounting brackets 73' which pivotally connect as by the rivets 74rear portions of tubular frame 68. Caps 75 are provided for the upperends of said rear legs, and in the fully opened position of the chairshown in Fig. 11, said caps operatively engage the undersurface of 64and 65.

Links '76 are pivotally connected at their one ends at 77 to legs 73 and74 and at their other ends are pivotaily connected at 78 to the frontlegs to complete the chair assembly.

A substantially rectangular seat platform 79 is posigoneitliupon the topsurface of frame 68 as shownin Referring to Fig. 13, the frame 68 has anouter convex surface and top and bottom arcuate edges 81 andfirespectively and an inner upright wall portion 82.

Said wall portion 82 has at spaced points thereon a plurality ofhorizontally extending slots 83 whichare adapted to cooperativelyreceive the offset ends the clips 84.

Said clips are rotatively positioned against the under surface ofplatform 79 and secured thereto by the-rivets" when 4 t 85, so that theclip ends 90 will be cooperatively and retainingly positioned withinslots 83 of frame 68- whensaid clips are at right angles to an adjacentportion of said frame, as in Fig. 14.

Clip 84 has toward one end the upright wall portion 86 which is soformed as to be arranged at an acute angle to the longitudinal axis ofclip 84 inasmuch as the side edge 87 is shorter than the opposite sideedge 88. Thisinclination of the substantially upright wall 86 providesthe clearance opening 89 to facilitate rotation of clip 84 so that theclip end 90 enters slot 83 and so that a portion of the upright wall 86will operatively engage wall portion 82 of said frame when the clip isin the position shown in Fig. 14.

Furthermore, the clip end 90 is inclined as at 91 whereby upon adjustingsaid clip to the position shown in Fig. 13, the trailing undersurface ofclip end-91 will operatively and wedgingly engage the wall'portion ofsaid frame, which defines the slot 83, to thereby tightly draw up theplatform 79 against the top edge 81 of'the tubular frame 68.

The rear undersurface portion of platform 79 is secured to the strip 70bya pair of right angular clips 92 riveted at 93 to the undersurface ofplatform 79 and riveted at 94 to said strip.

Having described our invention reference should now bolted to the claimswhich follow for determining the scope thereof.

We claim:

1. In a folding chair having a pair of front legs, a pair of rear legsand a seat between said pairs of legs and pivotally mounted thereon,said seat comprising a hollow tubular frame lying in a single plane,said frame having a plurality of spaced horizontally extending coplanarslots formed in its inner wall, a platform positioned upon said frame,and a plurality of locking clips pivotally secured upon the undersurface of said platform adjacent said frame, each clip being verticallyoffset below said platform extending horizontally through andretainingly positioned in an adjacent frame slot, the offset end of eachclip lying in a plane inclined laterally to the plane of said clip forwedging engagement with a portion of said frame forming the top boundaryof the slot for drawing up said 'platform'into tight engagement withsaid frame.

2. The combination of claim 1, there being an upright wall on each clipjoining said offset, and said wall operatively engaging the outside wallof said frame adjacent said platform when said clips are in platformlocking position at right angles to the corresponding inner wall of saidframe.

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